function enrollUserInCourse($requestingUser, $username, $courseName, $enrolled)
{
    $wsdl = "http://ita-provisioner.cis.fiu.edu:8080/axis2/services/VirtualLabs?wsdl";
    $location = "http://ita-provisioner.cis.fiu.edu:8080/axis2/services/VirtualLabs";
    try {
        $params = array('requestingUser' => $requestingUser, 'userName' => $username, 'courseName' => $courseName, 'flag' => $enrolled);
        $client = new SoapClient($wsdl, array('location' => $location));
        $result = $client->enrollUserInCourse($params);
        $success = $result->success;
    } catch (Exception $e) {
        echo $e->getMessage();
        $success = false;
    } catch (SoapFault $soapfault) {
        echo $soapfault->getMessage();
        $success = false;
    }
    return $success;
}